1. Cytokinin
  2. Abscisic Acid
  3. Protease
  4. Auxin
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Option 4 : Auxin

  • The  Plant hormone Auxin causes the plant to bend towards the sunlight.
  • It is a growth stimulant in plants.
  • Auxin is broken down on the sunnier side of the plant.
  • This causes the cells on the shadier side to grow more which in turn causes the bending of the plant towards sunlight.
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